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Note 9 - Leases (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Operating Lease, Cost $ 18 $ 17
Short-Term Lease, Cost 16 17
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 10 $ 16
Operating Lease, Weighted Average Remaining Lease Term (Year) 9 years 3 months 18 days  
Operating Lease, Weighted Average Discount Rate, Percent 6.60%  
Minimum [Member]    
Lessee, Operating Lease, Remaining Lease Term (Year) 1 year  
Lessee, Lease, Renewal Term (Year) 1 year  
Maximum [Member]    
Lessee, Operating Lease, Remaining Lease Term (Year) 99 years  
Lessee, Lease, Renewal Term (Year) 20 years